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If your Sony Wega will not turn on, the front green light blinks, you hear a faint whirring sound and the green light turns red and flashes, it probably means the lamp inside the set is no longer working. If you noticed the screen beginning to dim in the preceding days or weeks, this most likely is the cause.

If the green light flashes and the picture comes on momentarily but then goes off, and the green button flashes until the set restarts, then the seal around the lamp mount is loose and needs to be refitted.

If the picture on your Grand Wega cuts in and out and the green standby light flashes, both of the set's STKs need to be replaced. STKs are small chips on your television's circuit boards and are identifiable by their labels. The specific STKs used in your Grand Wega TV will be identifiable by the numbered labels on top of the STKs.

When you plug in your Sony Wega and hear a loud popping sound, it's probably caused by a defect in the high-voltage circuit. Let the professionals take care of this one.

If, after turning on your Sony Wega, you can hear your set but the screen is black, you most likely need to replace your projection lamp.

your user manual will have the flashing light code structure indicating the fault that caused the shutdown there is no thermal fuse in your TV

projection TV`s have integrated protection circuits built into the circuit design, these circuits turn the power off automatically when a fault has bin detected thisis in order to prevent a more costly repair, these circuits monitorpower supply , vertical and horizontal deflectionover voltage, or x ray, and also faults with convergence circuits.Diagnosing these faults require test equipment and a good knowledge of electronic repair techniques, and also a repair manual.

You did the right thing with the bulb. The current problem is something different altogether. My guess is that your TV is 2 plus years old. The Grand Wega has an inherrent latent defect, which Sony is not acknowledging or taking resposablity for, in that the optic block distorts after a certain number hours of use. I am curretly working to get an equittable resolution but Sony is stonewalling - would like to get a class action going for the KDF. To learn more Goggle MSNBC " Problems with Sony Gran Wega "